单项选择题

Which QoS model manages the QoS requirements for the network on a per-hop behavior （PHB） basis？（）

A.best-effort delivery
B.ingress committed rate （ICR）
C.shaping and policing
D.egress committed rate （ECR）
E.Integrated Services （IntServ）
F.differentiated services （DiffServ）

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单项选择题

Refer to the exhibit. The auto discovery qos command was configured on this interface 24 hours prior to the above configuration. Which statement is true about the configuration?（）

A. An IP address is needed on interface seriall/2.
B.The auto discovery qos command should be configured on the subinterface
C.A generated AutoOoS policy has been applied to serial1/2.
D.The collection of data has stopped.

单项选择题

Identify the link efficiency mechanism？（）

A.LFI
B.LLQ
C.RSVP
D.WFO
E.WRED

单项选择题

To provide quality of service （QoS） for voice traffic in an IEEE 802.1 q network， which class of service （CoS） value should be used in the 3-bit， user priority bits （PRI） field？（）

A.The PRI field should contain the Cos value of 010
B.The PRI field should contain the Cos value of 011
C.The PRI field should contain the Cos value of 100
D.The PRI field should contain the Cos value of 101
E.The PRI field should contain the Cos value of 110
F.The PRI field should contain the CoS value of 111